Does Google follow and count a backlink that goes through a JavaScript location.href redirect page?

Question

example.com has a link on their website which is on same domain like,

<a href="https://example.com?ref=mywebsite.tld">Reference</a>

example.com?ref=mywebsite.tld doesn't redirect with 302/301, it's just opening a blank page with a few line of javascript code and redirect to our website with javascript on page load,

location.href = "http://mywebsite.tld"

Does Google count this type of redirection as backlink?

Answer 1

Actually, only 301 redirection pass the Page Authority (PA) to target page and javascript redirection does not pass the PA, so you can not count on this type of redirection as a backlink.